Roof field vent



FIG. 1 is a top, front, perspective view of a roof field vent showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is an enlarged front view thereof;

FIG. 5 is an enlarged rear view thereof;

FIG. 6 is an enlarged side view thereof; and,

FIG. 7 is another side view thereof. 

The ornamental design for a roof field vent, as shown and described. 